Journal
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
Volume 13, Issue 11, Pages 10325-10338Publisher
ESG
DOI: 10.20964/2018.11.06
Keywords
Magnesium anode; Microalloying; Hot rolling; Microstructure; Discharge performance
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Funding
- Fundamental Research Funds for the Education Department of Hunan Province [17A019, 15C0116, K1705055]
- science and technology program of Changsha
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Mg-6Al-7Pb (wt.%) alloys with different Ce contents are prepared and their electrochemical discharge performances are measured in this research. Under casting condition, Mg-6Al-7Pb-0.3Ce alloy shows better electrochemical activity than other alloys. Subsequently, the discharge property of Mg-6Al-7Pb-0.3Ce alloy is further enhanced by multi-pass hot rolling. The result is verified by electrochemical tests and morphology observation. Mg2Pb and Al4Ce phases are observed, and fine grains are obtained in as-rolled Mg-6Al-7Pb-0.3Ce alloy. For as-rolled Mg-6Al-7Pb-0.3Ce alloy, the increased discharge performance is attributed to the synergistic effect of the dispersive AL(4)Ce and Mg2Pb phases. The Mg-air battery based on as-rolled Mg-6Al-7Pb-0.3Ce alloy supplies higher peak power density (102.7 mW.cm(-2)) than that based on as-rolled Mg-6Al-7Pb anode. Therefore, the as-rolled Mg-6Al-7Pb-0.3Ce alloy is an excellent anode material for Mg-air battery.
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